Etymograph

English

acetate

Acetate comes from Latin acētum ‘vinegar’, from acēscō ‘to become sour, to turn sour’, and ultimately from Proto-Indo-European *h₂eḱ- ‘sharp’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱ-1‘sharp’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱéh₁yeti1reconstructed
  3. Proto-Italicc. 1500–700 BCE*akēō1reconstructed
  4. Latinc. 75 BCE–200 CEaceō1‘to be sour’
  5. Latinc. 75 BCE–200 CEacēscō1‘to become sour, to turn sour’
  6. Latinc. 75 BCE–200 CEacētum1‘vinegar’
  7. Englishearliest quotation 1819acetate1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English acetate
  2. Earliest quotation in Wiktionary’s entry: 1819, Abraham Rees: “[…] to pad a piece in diluted acetate of…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱ-Wiktionary, English acetate‘sharp’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₂eḱéh₁yetiWiktionary, English acetatereconstructed
  3. Proto-Italicc. 1500–700 BCE*akēōWiktionary, English acetatereconstructed
  4. Latinc. 75 BCE–200 CEaceōWiktionary, English acetate‘to be sour’
  5. Latinc. 75 BCE–200 CEacēscōWiktionary, English acetate‘to become sour, to turn sour’
  6. Latinc. 75 BCE–200 CEacētumWiktionary, English acetate‘vinegar’
  7. Englishearliest quotation 1819acetateWiktionary, English acetate. Earliest quotation in Wiktionary’s entry: 1819, Abraham Rees: “[…] to pad a piece in diluted acetate of…”

The story

Formed from the root of Latin acētum (‘vinegar’) + -ate, from aceō (‘to be sour’).

Full etymology on Wiktionary

Linked words

through Proto-Indo-European *h₂eḱ- ‘sharp’

hear, edge, egg, ear, hammer, eager, axe, oxide, vinegar, acute, mediocre, acne, mediocrity, paragon, acupuncture, hark, acacia, acumen, acme, acuity, exacerbate, acrimony, acrid, rosacea, acerbic, exacerbation, 71 more

through Proto-Italic *akēō

acidity, 22 more

through Latin aceō ‘to be sour’

acid, acyl, roselle, 23 more

through Latin acētum ‘vinegar’

acetic, 13 more

Today it means

noun Any ester or salt of acetic acid.

Sources

Sources: Wiktionary, “acetate”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Proto-Indo-European *h₂eḱ- / acetate

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